Hose-coupling.



E. H. GOLD.

HOSE COUPLING. I

E. H. GOLD.

HOSE COUPLING.

APPLICATION FIL'ED IEB.29, 1912.

1 0 1 441 Patented Dec. 16,1913.

3 SHEETS-SHEET 2.

E. H. GOLD.

HOSE COUPLING.

APPLICATION FILED FEB.29,191Z. 1,081,444, Patented Dec. 16, 1913.

3 SHEETS-SHEET 3.

ENE @FFllQF.

EGIBEBT H. GOLD, OF CHICAGO, II-ILINOZLSa HOSE-COUPLING.

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Specification of Letters Patent.

Patented Dec. 16, 1913.

Application filed. February 2-9, 1912. Serial No. 680,686.

To all whom it may concern:

Be itknown that I, EGBERT H. GOLD, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Hose-Couplings, of whichthe following is a specification.

My invention relates to hose couplings and more particularly to hosecouplings, of the gravity type, which are used for coupling together thehose of steam train pipes on railway cars; and the invention has for itsprincipal object to provide, in addition to the ordinary neans forinterlocking the mating coupler heads, a positive lock, which may beused or not as circumstances require, for preventing the coupler headsfrom being moved out of their interlocking relationship, either partlyor wholly, under conditions which are well known to those skilled inthis art. My invention provides a supplemental coupler lock foraccomplishing this result which is simple and inexpensive to make, whichwill securely and positively lock the coupler members together whendesired, and which is very easy to manipulate and little likely to getout of order or cause trouble to the trainmen. Furthermore, theconstruction is such that the locking member may stand out of lockingengagement with the coupler head, or part thereof that it is designed toengage, without being in the way and without any danger of beingaccidentally moved back into the locking position. This is important asit is not always desirable to have the coupling positively locked.

A particular object of the invention is to provide a suitable lock for ahose coupling of the type described and claimed in my application SerialNo. 631,252 filed June 5, 1911, in which the coupler heads are rigidlyengaged and locked together without causing the gaskets to exert anysubstantial pres sure one against the other, the heat of the steam beingutilized to expand the gaskets so as to produce a steam tight jointbetween the coupler heads.

The invention has for further objects such other new and improvedconstructions, arrangements and devices in hose couplings as will behereinafter described and claimed.

The invention is illustrated, in a preferred embodiment, in theaccompanying drawings, wherein.

Figure 1 is a side elevation of a coupling constructed in accordancewith my invention; Fig. 2, a plan view of the same; Fig. 3, a sectiontaken on line 33 of Fig. 2, looking in the direction of the arrows, thehose nipples being omitted; Figt, a section taken on line 44 of Fig. 2,looking in the direction of the arrows; Fig. 5, an end elevation, thenipple being omitted; Fig. 6, a detail, in perspective, of the gasketlocking screw; Fig.7, an inverted plan view of the parts shown in. Fig.3; Fig. 8, a sectional view taken on line 88 of Fig. 1, looking in thedirection of the arrows; Fig. 9, a view, in perspective, of one of thegaskets, and Fig. 10, a similar view of one of the locking arms. Likecharacters of reference designate like parts in the several figures ofthe drawings. Referring to the drawings, the coupling is composed of twomating coupling members each, in the embodiment shown, consisting of acoupler head 25 formed with the rigid coupling arm 26 adapted to engagewith the side of the other coupler head and with the steam port 27terminating at one end in the threaded bore 28 adapted to receive thehose nipple 29 and at the other end in the gasket recess 30 adapted toreceive a gasket 31 made of the usual rubber composition. The couplerheads and their arms are provided with the usual engaging lugs 32, 33which may be of any preferred configuration and which serve, undernormal conditions, to hold the mating coupler members in interlockedcoupling relation.

One or preferably each of the coupler heads is provided with asupplemental, positive lock constructed as follows: 34 designates alocking arm pivoted at its lower end to the side of one of the couplerheads. The coupler head is preferably formed on its under side with aboss 35 and the arm 34 is pivoted on a bolt 36 which extends through theboss and is held in position by the nut 37. The arm 34 has an angularprojection 38 which is adapted to extend around and over the end of thecoupling arm 26 of the other coupling member. screw 39, the end of whichis preferably recessed as indicated at 40, is threaded through aprojection 38 and bears against the upper surface of the coupling arm 26just referred to. The upper surface of the coupling arm is preferablyinclined clownwardly away from the locking arm as indicated at 41. Byscrewing down screw 39 the mating coupling members may be tightly drawnand locked together. It will be understood that these coupling membersin service have to be mated at diiferent times with a large number ofcomplementary coupling members which may differ slightly due to wear, orto injury, or defects in the castings. The screws 39 provide thenecessary adjustability to meet this condition. The lower end of thelocking arm 3% is formed with a lug 42 which is adapted to come intocontact with a stop lug 43 on the under side of the coupler head whenthe arm has been moved back a little way from its locking position. Thedotted lines in Fig. 1 show the arm in the disengaged position. Theweight of the arm prevents it from being accidentally thrown or movedback into the locking position when it is not desired to have thecoupler heads locked. If desired the arm may be removed. entirely byremoving the bolt 36. The coupler heads are each formed on top with aboss 44 adapted to receive a pointed screw 4-5, the point of whichpasses through a perforation in the coupler head and may be driven intothe gasket 31 to vhold the same in place. Preferably the locking arm 34is formed at its pivot point with a V-shaped groove 34 and the boss 35with a V-shaped lug 35. A spring washer 37 is interposed between the nut37 and the boss 35. By this arrangement the arm is kept fromaccidentally falling back out of the locking position if the screw 39becomes loosened and also from being accidentally moved into the lockingposition when not intended to be used.

The supplemental lock above described, it will be seen, not onlyprevents actual uncoupling, but also prevents the coupler heads frombeing moved sufliciently to cause a gap at the meeting faces and theconsequent leakage of steam.

While the device may be used on any Sewall or gravity coupler, it isintended particularly for use in a coupling of the sort shown in whichthe rigid faces of the mating coupler heads are brought into engagementand the gaskets afterward expanded by the heat of the steam sufiicientlyto make a steam tight joint. In a structure of this sort, the advantagesof which are pointed out in my application for patent above referred to,it is important that where a supplemental lock is used, it should becapable of holding the coupler heads in rigid engagement, as theefiectiveness of the coupling depends upon that rather than upon thecompression of the gaskets. Moreover, the supplemental or positive lockherein shown may be quickly thrown open leaving the coupler headscoupled together but by the ordinary interlock of the arms with theheads which will autotrain separate.

I claim:

1. In a hose coupling, the combination with mating coupler heads eachformed with a coupling arm adapted to engage with the side of the othercoupler head, of a supplemental locking arm pivotally engaged at thelower end with one of the heads, so that it may stand either in anengaging or a I disengaged position. with respect to the coupling arm ofthe other head, and formed at its upper end with an angular projectionadapted to extend over the end of said coupling arm of the other couplerhead when the said locking arm isin engaging position, and a screw insaid projection adapted to bear against the upper surface of saidcoupling arm. 7

2. In a hose coupling, the combination with mating coupler heads eachformed with a coupling arm adapted to engage with the side of the othercoupler head, of a locking arm pivotally engaged at the lower end withone of the heads, so that it may stand either in an engaging or a'disengaged position with respect to the coupling arm of the other head,and formed at its upper end with an angular projection adapted to extendover the end of said coupling arm of the other coupler head when thesaid locking arm is in engaging position, a'screw in said projectionadapted to bear against the upper surface of said cou 'olin-g arm, and astop lug on the lower end of said looking arm adapted to come intocontact with thehead on which said arm is pivoted so as to hold said armin an oblique, non-locking position. j

3. In a hose coupling, the combination with a pair of mating couplerheads, each formed with a coupling arm adapted to interlock with theside of the complementary coupler head, of a supplemental locking armpivotally engaged to one of said heads, so that it may stand either inan engaging or a disengaged position with respect to the coupling arm ofthe other head, and formed so as to extend over said coupling arm of theother head when the said locking arm is in engaging position, and anadjustable member connected with said pivoted arm and adapted to bebrought to bear upon the coupling arm thereunder.

4. In a hose coupling, the combination with a pair of mating couplerheads, the opposed faces of which are adapted to be abutted one againstthe other, each of the heads being formed with a coupling arm adapted tointerlock with the side of the complementary coupler head, of asupplemental locking arm pivotally engaged to one of said heads, so thatit may stand either in an engaging or adisengaged posit-ion with respectto the coupling arm of the other head, and formed so as to extend oversaid coupling arm of the other head when the said locking arm is inengaging position, and an adjustable member connected with said pivotedarm and adapted to be brought to bear upon the coupling arm thereunder.

5. In a hose coupling, the combination with a pair of mating couplerheads each formed with a coupling arm adapted to interlock with the sideof the complementary coupler head, of a supplemental locking arm pivotedto the side of one of said heads so as to swing in a directionlongitudinally of the coupling and take a position over the end of thecoupling arm of the complementary head, and an adjustable memberconnected with said pivoted arm adapted to be brought to bear upon thecoupling arm thereunder.

6. In a hose coupling, the combination with a pair of mating couplerheads each formed with a coupling arm adapted to interlock with the sideof the complementary coupler head of a supplemental locking arm pivotedto the side of one of said heads so as to swing in a directionlongitudinally of the coupling and take a position over the end 01": thecoupling arm of the complementary head, an adjustable member connectedwith said pivoted arm adapted to be brought to bear upon the couplingarm thereunder, the pivoted arm and the head to which it is pivotedbeing formed with coengaging wedge faces, and a spring adapted to becompressed when said arm is turned upon its pivot.

7. In a hose coupling, the combination with a pair of mating couplerheads, each formed with a coupling arm adapted to interlock with theside or the complementary coupler head of a supplemental. locking armprovided with an angularly disposed projection, a screw extendingthrough said projection, a bolt by means of which said arm is pivotallymounted on the side of one of said coupler heads, a pair of coengagingwedges on said locking arm and the side of the coupler head to which itis pivoted, a spiral spring on the end of said bolt, an abutment on thebolt for said spring, and stops on the locking arm and the coupler head,substantially as described.

8. In a hose coupling, the combination with a pair of mating couplerheads, each formed with a coupling arm adapted to interlock with theside of a complementary coupler head, of a supplemental locking armpivotally engaged to one of said heads so that it may stand either in anengaging or a disengaged position with respect to the coupling arm ofthe other head and formed so as to extend over said coupling arm of theother head when said locking arm is in engaging position, an adjustablemember connected with said pivotal arm and adapted to be brought to bearupon the coupling arm thereunder, and a spring arranged so that it tendsto hold the locking arm in the disengaged position.

9. In a hose coupling, the combination with a pair of mating couplerheads, each formed with a coupling arm adapted to interlock with theside of a complementary coupler head, of a supplemental locking armpivotally engaged to one of said heads so that it may stand either in anengaging or a disengaged position with respect to the coupling arm ofthe other head and formed so as to extend over said coupling arm of theother head when said locking arm is in engaging position, an adjustablemember connected With said pivotal arm and adapted to be brought to bearupon the coupling arm thereunder, and means which serves to hold thelocking arm against being accidentally displaced from its disengagedposition.

10. In a hose coupling, the combination with a pair of mating couplerheads, each formed with a coupling arm adapted to interlock with theside of the complementary coupler head, a supplemental locking arm, abolt which pivots said arm to one of said heads, said arm being formedso as to eX- tend over the coupling arm of the other head when the saidlocking arm is in engaging position, an adjustable member connected withsaid pivoted arm and adapted to be brought to bear upon the coupler armthereunder, and a spring on said bolt which tends to hold said lockingarm in its engaging and in its disengaged position.

EGBERT II. GOLD.

Witnesses L- A. FALKENBERG,

G. Y. SKINNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

